Home / 43,281.13-64,915.19-13,695.12

Finding the Fourth Proportional to 43,281.13, 64,915.19 and 13,695.12

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Solution

The fourth proportional to 43,281.13, 64,915.19 and 13,695.12 is: 20,540.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,281.13 : 64,915.19 = 13,695.12 : x
  2. Step 2: Convert to fraction form
    43,281.13/64,915.19 = 13,695.12/x
  3. Step 3: Cross multiply
    43,281.13x = 64,915.19 × 13,695.12
  4. Step 4: Simplify right side
    43,281.13x = 889,021,316.87
  5. Step 5: Solve for x
    x = 889,021,316.87/43,281.13
  6. Step 6: Final answer
    x = 20,540.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.